moby / moby/libnetwork

docker throws error when adding IPv6 route

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#2,432 2 comments 3 reactions 0 assignees View on GitHub

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Dominant language
Go
Stars
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Forks
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PR merge metrics
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Description

If I create a new docker bridge network and enable IPv6 with an IPv6 subnet, dockerd will throw the following error:

dockerd[950]: time="2019-08-14T21:42:37.959110928+02:00" level=error msg="Could not add route to IPv6 network fddd:0:0:1234::/64 via device dnetTest"

The route itself was created and it is working fine.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue with a new Docker bridge network using IPv6 and an IPv6 subnet, then trace the route-add path that emits the shown dockerd error. Done means the working IPv6 route is handled without reporting a spurious error.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, go
Domain
networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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